Nuts, Acorn

Sold in boxes of 100 for sizes 3/8 and smaller and in boxes of 50 for 1/2” and 5/8”.

Additional Information

Diameter and Thread Pitch Conversion Chart
National Coarse (NC) 1-64 3-48 4-40 6-32 8-32 10-24 12-24
National Fine (NF) 1-72 3-56 4-48 6-40 8-36 10-32 12-28
Metric (Approx) M2 M2.5 M3 M3.5 M4 M5  
National Coarse (NC) 1/4-20 5/16-18 3/8-16 7/16-14 1/2-13 9/16-12 5/8-11 3/4-10 7/8-9
National Fine (NF) 1/4-28 5/16-24 3/8-24 7/16-20 1/2-20 9/16-18 5/8-18 3/4-16 7/8-14
Metric (Approx) M6 M8 M10   M12 M14 M15 M20 M22

 

National Coarse (NC) 1 – 8 1-1/8 – 7 1-1/4 – 7 1-3/8 – 6 1-1/2 – 6 1-3/4 – 5 2 – 4.5 2-1/2 – 4 3 – 4
National Fine (NF) 1 – 12 1-1/8 – 12 1-1/4 – 12            
Unified Thread (UN)   1-1/8 – 8 1-1/4 – 8 1-3/8 – 8 1-1/2 – 8 1-3/4 – 8 2 – 8 2-1/2 – 8 3 – 8
Metric (Approx) M24 M30 M32   M36        

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